Inventor

RAMANATHAN VISVANATHAN

CH25 patents

⚠️ This page may combine multiple inventors who share the name “RAMANATHAN VISVANATHAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RAMANATHAN VISVANATHAN

CIBA GEIGY CORP

3-Cyano-1,2,4-thiadiazolyl-5-czo dyestuffs

3-Nitro-5-azopyridine dyestuffs

Polycyclic compounds

Disperse diaminopyridine-3-azo dyestuffs

Anthraquinoylcarboxylic acid hydrazides, curable compositions and use thereof

Anthraquinoylcarboxylic acid hydrazides, curable compositions and use thereof

Cationic benzothiazole disazo compounds

Disazo bis-benzthiazolyl compounds

Azo dyestuffs having a carboxyl group and an iminosulfonamido, iminosulfonylalkyl or iminosulfonylaryl group in the coupling component

Basic water-soluble bis-(β-azo-α-naphtholamino)-triazine compounds

Fiber reactive water soluble 2,4,6-triamino, 3-cyano pyridine-(5) azo dyestuffs

Azo dyestuffs having a carboxyl group and a substituted sulfonylimino group in the coupling component

Substituted anthraquinones and use thereof in epoxy resins

Azo dyes prepared using 2-alkylamino-3-cyano-4,6-diaminopyridines as coupling components

Disazo compounds containing a 6-acetoacetamide-1-naphthol-3-sulfonic derivative as coupling component

Styryl dyestuffs containing certain amino, cyanopyridine moieties

CIBA GEIGY AG

Azo compounds, their manufacture and use

Disazo pyrazolyl dyed polyester fibers

2,6-Dihydroxy-3-cyano-4-methylpyridine containing azo dyes which contain a functional amino group

Polyester fibers dyed with a disazo disperse dyestuff

Process for dyeing and printing textile materials of synthetic organic fibers

Transfer printing process for hydrophilic fibrous material

Process for the manufacture of nitroaminopyridines

Monoazo compounds

Heterocyclic azo compounds containing a quaternated hydrazide group